#include<iostream>
#include<vector>
#include<string>
#include<list>
#include<algorithm>
#include<functional>
#include<map>
#include<unordered_map>
#include<unordered_set>
#include<queue>
#include<stack>
#include<cstring>
#include<bits/stdc++.h>

using namespace std;

int main(int argc, char** argv) {
    cout << "hello world!!" << endl;
    return 0;
}
